Errors writing to /tmp

["Stephen E. Hargrove" <stephen@virtual-attorney.com>]

For some reason, I can no longer write to /tmp.  Following is an
example error from xmms:

checkdir:  cannot create extraction directory: /tmp/fileuaM3b6

Here's the permissions on /tmp:

drwxrwxrwt  8 root     root        2048 Apr    4 09:43 tmp

Apparently I've done something, but I have no idea what it could be.  Any
ideas or thoughts would be appreciated.

Thanks!
-- 
steve